!!The comics:
* BaseBreaker: Orlando is this. To some readers, he/she is a BloodKnight who is LivingForeverIsAwesome personified. To other's he/she's a CreatorsPet and a one-note CampGay [[UnfortunateImplications stereotype]].
* BrokenBase:
** The ''Century'' trilogy is very divisive amongst readers, with some hailing it for it's more experimental qualities, the characters that appear and the many [[MomentOfAwesome Awesome Moments]] that occur. Others slam due it due to Moore's [[NostalgiaFilter attitude towards everything after 1969]] and [[HePannedItNowHeSucks his treatment]] of [[Franchise/JamesBond certain]] [[Franchise/HarryPotter characters]].
*** The ''2009'' installment is in particular very divisive because of Moore's treatment of [[spoiler: Harry Potter]].
* CompleteMonster: Hawley Griffin, aka the Invisible Man, is a psychopath recruited by England so his powers could be utilized for special missions. Introduced hiding in an all-girls boarding school, Griffin's been taking advantage of his powers to rape the teenagers there. He's already impregnated three girls and is apprehended in the process of raping a fourth. When he joins the league, it's not out of any sense of altruism but because he's been promised a cure for his condition, a pardon for his crimes, and a large sum of money. During his tenure on the team, Griffin displays streaks of cruelty and cowardice in equal measure. At one point he beats an innocent constable to death simply because he wanted the man's clothes, and at the climax of the team's first adventure, [[DirtyCoward Griffin attempts to abandon the league to their deaths when things get too dangerous.]] With the arrival of the invading Martians, [[LesCollaborateurs Griffin eagerly approaches them and sells out his entire planet to the invaders just so he can rule alongside them.]] Griffin gives the Martians information on where the human artillery positions are so they can slaughter their opposition, tries to get his teammates killed by selling out their hideout's location, [[NoHoldsBarredBeatdown brutalizes Mina Murray]] while stealing valuable military information, and advises the Martians to use their Red Weed to destroy the Thames and incapacitate the [[CoolBoat Nautilus]]. In a series where [[BlackAndGrayMorality even monsters can be heroes]], Griffin was never anything but a [[ItsAllAboutMe selfish, megalomaniacal snake]] who was willing to let his race be butchered and enslaved just so he could rule over what was left.
%%Do not add anyone else without going to the cleanup thread first.
* CrackPairing: Since the series deals with the relationships between various fictional characters, this happens quite a bit. Most visibly with Quartermain and Murray, but it happens with minor characters as well. Frankenstein's monster and his wife Olympia from Tales of Hoffman come to mind.
* CreatorsPet: Orlando is regarded as some as this in the ''Century'' trilogy. Worth noting though the character is a BaseBreaker who divides opinion.
* GeniusBonus: Pretty much every damn page.
* HePannedItNowHeSucks: It is felt one part of the hatred towards ''[[BaseBreaker Century: 2009]]'' is due to Moore's opinion on [[spoiler: Harry Potter]].
* HarsherInHindsight: In ''Century: 2009'', JudiDench's M from the Franchise/JamesBond films, who in this universe is [[Series/TheAvengers Emma Peel]], is made [[spoiler: immortal. A few months later, she was killed off in ''Film/{{Skyfall}}'']].
* HilariousInHindsight
** Moore's GrandFinale for ''Century: 2009'' involves an epic face-off between [[spoiler: Harry Potter and Mary Poppins]]. Just a few months after he wrote that scene (and almost exactly a month after the comic hit the stands) a battle between [[Franchise/HarryPotter Voldemort]] and a swarm of Mary Poppinses turned out to be part of the Opening Ceremony of the 2012 Olympic Games.
** Among many other tidbits, ''Century: 2009'' manages to tie Franchise/JamesBond and ''Series/TheAvengers'' together into one universe with the revelation that JudiDench's M in the later Bond films is actually an aging Emma Peel. Though we never get to find out M's true identity in the films, ''Film/{{Skyfall}}'' actually did turn out to include a brief moment where Kincade, Bond's old groundskeeper, addresses her as "Emma" (presumably because he misheard "M" as "Em").
** ''Century: 2009'' name-drops [[Series/TheThickOfIt "seasoned fixer Malcolm Tucker"]] in the same issue that includes several background cameos from [[Series/DoctorWho The Doctor]]. Fast-forward to 2013: [[Creator/PeterCapaldi Malcolm Tucker]] is now set to become the Twelfth Doctor.
** A 2005 episode of ''Series/{{Extras}}'' featuring Creator/DanielRadcliffe mercilessly hitting on Dame Diana Rigg suddenly became HilariousInHindsight when ''Century: 2009'' featured [[Series/TheAvengers Emma Peel]] leading the fight to take down a deranged Literature/HarryPotter. Maybe she wanted revenge on him [[ItMakesSenseInContext for flinging that condom at her head]]?
** The final scene of the comic [[spoiler:is of Quatermain's grave in Africa, just like the movie despite its AdaptationDecay.]]
** About thirteen years after Creator/AlanMoore made Literature/SherlockHolmes' older brother [[Franchise/JamesBond "M"]] in the first volume of ''League'', [[Creator/JonnyLeeMiller the original M's grandson]] became Sherlock Holmes in ''Series/{{Elementary}}''.
* LesYay: [[spoiler: Mina has no use for Orlando when he's a male.]]
* OffscreenMomentOfAwesome: We never get to see the full exploits of the Second League of the Extraordinary Gentlemen, and their very much indeed awesome sounding encounter with Les Hommes Mysterieux is only described in text on the Black Dossier. Also sideway referenced in text are the missions of Prospero's Men, The Third League of the Extraordinary Gentlemen, Der Zwielicht-helden and Les Hommes Mysterieux themselves.
** We also see far too little of the League of the 1780s, featuring Lemuel Gulliver, the Scarlet Pimpernel and wife, the Scarecrow, Fanny Hill, and Natty Bumpo. Most of what we do see when they appear is when they've largely retired from adventuring and are touring the world indulging their more hedonistic tendencies.
* TakeThatScrappy: People who disliked [[spoiler: Literature/HarryPotter]] or who liked it but felt it was overrated in esteem and especially found the title character less interesting than the supporting cast enjoyed Moore's takedown of it in Century Vol 3.
* TheyWastedAPerfectlyGoodPlot: The announcement of the ''Century'' trilogy initially had fans buzzing because they thought they'd finally get to see the original graphic novel's premise applied to 20th century fiction. And they did...except, instead of creating a new team of champions for a new era of fiction, Moore just made the two remaining members of the original FiveManBand immortal, and added ''one'' consistent new member (Orlando) who quickly devolved into a CreatorsPet. By ''2009'', Mina and Allan have mentally aged so much that they barely even resemble their literary counterparts (which kind of kills what made the series fascinating in the first place) leaving behind little more than ultra-obscure background references.
* UnfortunateImplications: Usually parodied, but ''Black Dossier'''s Sexfiend Golliwog definitely qualifies. Though knowing Alan Moore he fully knows about these and is chortling to himself as people get in a huff about them. As the ValuesDissonance shows he does like playing around with Un-PC notions.
* ValuesDissonance: The comic deliberately fakes this trope to create aesops such as "ORIENTALS, while BRILLIANT, are EVIL". Which we would like to stress is a verbatim quote.
* WhatDoYouMeanItWasntMadeOnDrugs: The Beatnik novella from the Black Dossier reads like this, which, given the source material, isn't surprising. If one takes the time to actually decipher the text, the plot seems to involve Fu Manchu and Professor Moriarty's descendants ([[Literature/OnTheRoad Dean Moriarty]] and [[Creator/JackKerouac Doctor Sax]], respectively) continuing a family feud by unleashing an ancient Aztec linguistic virus made from centipedes. Oh and the virus actually turns out to be Lovecraftian {{Eldritch Abomination}}s.

!!The film:
* HilariousInHindsight: The movie's EvilPlan involves a mysterious bad guy (who's eventually revealed to be [[spoiler: Professor Moriarty]]) trying to start WorldWarI a few decades early. ''Film/SherlockHolmesAGameOfShadows'', which came out almost a decade later, was about the same thing. [[spoiler: In this film, Moriarty even references the Reichenbach falls as where "that man died." Perhaps he got some plastic surgery, and tried to start his EvilPlan all over again, but went more ambitious by using the League?]]
** Richard Roxburgh would also go on to play Dracula in ''Film/VanHelsing'', which also featured a Mr. Hyde a year later.
** When [[http://www.rogerebert.com/reviews/rudyard-kiplings-the-jungle-book-1994 reviewing the 1994 live-action film]] ''Film/TheJungleBook'', Roger Ebert talked about the InNameOnly premise and wondered "What's next? ''Tom Sawyer'' with a car chase and a shoot-out?"
* RetroactiveRecognition: Shane West (Sawyer) currently plays Michael in ''Series/{{Nikita}}''.
** Somewhat funny, because Peta Wilson (Mina) got her start as the lead on ''Film/LaFemmeNikita'', of which ''Nikita'' is a remake.